Results 51 to 60 of about 35,373 (281)

Near‐Field Phonon Nanoscopy and Imaging of Structural Variants in Mixed Phase BiFeO3

Advanced Functional Materials, EarlyView.
Nano‐Fourier transform infrared spectroscopy and scattering scanning near‐field optical microscopy imaging reveal the phonon response of nanoscale phase variants in mixed‐phase BiFeO3 (BFO). Direct mid‐infrared imaging of associated distinct vibrational signatures is used as a non‐invasive optical detection method for electrical switching of ...
Dawei Zhang, En‐Ming You, Lei Wang, Byung‐Kweon Jang, Tanzeela Yousaf, Pengfei Zhang, Jincheol Kim, Chan‐Ho Yang, Jan Seidel   +8 more
wiley   +1 more source

Antiferromagnetic ordering of itinerant systems in modified mean-field theory

, 2004
This is an analysis of the itinerant model for antiferromagnetism, in which is included both on-site and inter-site electron correlations. We also consider the band degeneration, which brings into the Hamiltonian the on-site exchange interactions.
Amadon, Brouers, Campbell, Grzegorz Górski, Górski, Hirsch, Hubbard, Jerzy Mizia, Kollar, Krzysztof Kucab, Micnas, Mizia, Mizia, Mizia, Plischke, Rice, Strack, Tallon, Velický   +18 more
core   +1 more source

Control of Ferromagnetism of Vanadium Oxide Thin Films by Oxidation States

Advanced Functional Materials, EarlyView.
The nonstoichiometric VOx exhibits a distinct ferromagnetic hysteresis loop and demonstrates a high magnetic susceptibility (χ=dMdH$ = \frac{{dM}}{{dH}}\;$∼10). Micromagnetic simulations show the results of the “partial volume fraction ferromagnetic phase model” for VOx/Co/Pt structure.
Kwonjin Park, Jaeyong Cho, Soobeom Lee, Jaehun Cho, Jae‐Hyun Ha, Jinyong Jung, Dongryul Kim, Won‐Chang Choi, Jung‐Il Hong, Chun‐Yeol You   +9 more
wiley   +1 more source

Ising Expansion for the Hubbard Model

, 1995
We develop series expansions for the ground state properties of the Hubbard model, by introducing an Ising anisotropy into the Hamiltonian. For the two-dimensional (2D) square lattice half-filled Hubbard model, the ground state energy, local moment ...
A. Moreo, A. Moreo, B. I. Halperin, D. A. Huse, D. L. Hunter, Jr., D. Penn, E. Dagotto, E. Lieb, J. A. Henderson, J. D. Reger, J. E. Hirsch, J. E. Hirsch, J. Hubbard, J. Hubbard, J. R. Schrieffer, L. Lilly, M. C. Gutzwiller, N. Furukawa, P. J. H. Denteneer, P. J. H. Denteneer, P. W. Anderson, P. W. Anderson, R. P. Singh, R. R. P. Singh, R. R. P. Singh, R. R. P. Singh, R. R. P. Singh, Rajiv R. P. Singh, S. R. White, Y. S. Yang, Zhu-Pei Shi   +30 more
core   +2 more sources

Spin Glass and antiferromagnetism in Kondo lattice disordered systems [PDF]

, 2003
The competition between spin glass (SG), antiferromagnetism (AF) and Kondo effect is studied here in a model which consists of two Kondo sublattices with a gaussian random interaction between spins in differents sublattices with an antiferromagnetic mean
Coqblin, B., Magalhaes, S. G., Schmidt, A. A., Theumann, Alba, Zimmer, F. M.   +4 more
core   +2 more sources

Discovery of an Intrinsic Antiferromagnetic Semiconductor EuSc2Te4 With Magnetism‐Driven Nonlinear Transport

Advanced Functional Materials, EarlyView.
EuSc₂Te₄, an antiferromagnetic semiconductor, exhibits a nonlinear Hall effect (NLHE) characterized by quadratic current–voltage behavior. Combined experimental and theoretical studies reveal that this NLHE is linked to its antiferromagnetism and involves contributions from the quantum metric.
Seng Huat Lee, Yufei Zhao, Noble Gluscevich, Hemian Yi, Zachary Morgan, Huibo Cao, Jahyun Koo, Yu Wang, Jingyang He, Venkatraman Gopalan, Yuanxi Wang, Weiwei Xie, CuiZu Chang, Qiang Zhang, Binghai Yan, Zhiqiang Mao   +15 more
wiley   +1 more source

Novel Coexistence of Superconductivity with Two Distinct Magnetic Orders

, 2005
The heavy fermion Ce(Rh,Ir)In5 system exhibits properties that range from an incommensurate antiferromagnet on the Rh-rich end to an exotic superconductor on the Ir-rich end of the phase diagram.
A. D. Christianson, A. H. Lacerda, A. Llobet, A. A. Abrikosov, A. A. Abrikosov, G. L. Squires, I. P. Swainson, J. D. Thompson, J. L. Sarrao, J. S. Gardner, J. W. Lynn, J.-M. Mignot, K. Prokes, N. O. Moreno, P. G. Pagliuso, P. C. Canfield, Wei Bao   +16 more
core   +1 more source

Unconventional resistivity at the border of metallic antiferromagnetism in NiS2 [PDF]

, 2006
We report low-temperature and high-pressure measurements of the electrical resistivity \rho(T) of the antiferromagnetic compound NiS_2 in its high-pressure metallic state. The form of \rho(T) suggests that metallic antiferromagnetism in NiS_2 is quenched
A. Eichler, D. Braithwaite, F. M. Grosche, G. Baym, G. G. Lonzarich, G. G. Lonzarich, G. Knebel, J. A. Wilson, J. A. Wilson, J. Flouquet, M. J. Steiner, N. Mori, P. G. Niklowitz, P. L. Alireza, R. Hauser, S. R. Julian, T. Moriya, Y. Sekine   +17 more
core   +3 more sources

Switching of Magnetic Order via Non‐Magnetic Al Addition in FeCoNiMnAlx Films

Advanced Functional Materials, EarlyView.
Non‐magnetic Al addition provides a sensitive handle to switch the magnetic order in high entropy FeCoNiMnAlx thin films via fcc to bcc phase transformation. Films with fcc structure exhibit a large exchange bias, while bcc films exhibit enhanced ferromagnetic properties, reflecting the magnetic ground state of Mn which switches from antiferromagnetic ...
Willie B. Beeson, Dinesh Bista, Nushrat Naushin, Alpha T. N'Diaye, Roopali Kukreja, Gen Yin, Kai Liu   +6 more
wiley   +1 more source

On the coexistence of antiferromagnetism and d + i d superconducting correlations in the graphene bilayer

, 2012
We discuss t-J-U model on a honeycomb monolayer that has the same low-energy description of the kinetic term as graphene bilayer, and in particular study coexistence of antiferromagnetism and superconducting correlations that originate from Cooper pairs ...
Milovanović, M. V., Predin, S.
core   +1 more source